Horava-Lifshitz gravity with detailed balance

TL;DR

This paper explores Horava-Lifshitz gravity with detailed balance without projectability, showing it limits couplings effectively and results in sensible dynamics, but requires a large negative cosmological constant.

Contribution

It demonstrates that detailed balance can be implemented without projectability, maintaining sensible dynamics and reducing coupling proliferation in Horava-Lifshitz gravity.

Findings

Detailed balance limits coupling proliferation

The theory remains dynamically sensible without projectability

The bare cosmological constant is constrained to be large and negative

Abstract

Horava-Lifshitz gravity with "detailed balance" but without the projectability assumption is discussed. It is shown that detailed balance is quite efficient in limiting the proliferation of couplings in Horava-Lifshitz gravity, and that its implementation without the projectability assumption leads to a theory with sensible dynamics. However, the (bare) cosmological constant is restricted to be large and negative.